JPA+Hibernate：@OneToOne級聯(lián)保存無效

創(chuàng)建HUSBAND表

CREATE TABLE HUSBAND (
    ID INTEGER,
    NAME VARCHAR2(10) 
);

創(chuàng)建WIFE表

CREATE TABLE WIFE (
    ID INTEGER,
    NAME VARCHAR2(10) 
);

HUABAND實體及Repository

@Entity
@Table(name = "HUSBAND", schema = "SYSTEM")
public class Husband {
    @Id 
    @Column(name = "ID")
    private int id;
    @Column(name = "NAME")
    private String name;
    @OneToOne
    @Cascade({CascadeType.SAVE_UPDATE})
    @PrimaryKeyJoinColumn
    private Wife wife;
    // 省略getter、setter及構(gòu)造函數(shù)
}

public interface HusbandRepository extends JpaRepository<Husband, Integer> {
}

WIFE實體及Repositpry

@Entity
@Table(name = "WIFE", schema = "SYSTEM")
public class Wife {
    @Id 
    @Column(name = "ID")
    private int id;
    @Column(name = "NAME")
    private String name;
    @OneToOne
    @PrimaryKeyJoinColumn
    private Husband husband;
    // 省略getter、setter及構(gòu)造函數(shù)
}

public interface WifeRepository extends JpaRepository<Wife, Integer> {
}

為何Husband實體可以正確添加，但Wife實體卻沒有被級聯(lián)添加呢？

Husband husband = new Husband(1, "Tim", new Wife(1, "Lucy"));
husbandRepository.save(husband);

Cascade用的均是Hibernate的類

import org.hibernate.annotations.Cascade;
import org.hibernate.annotations.CascadeType;

---------------------------分割線-----------------------------
將
@Cascade({CascadeType.SAVE_UPDATE})
修改為
@Cascade({CascadeType.MERGE})
則級聯(lián)新增、修改都可以實現(xiàn)，但是我想明確的指定為新增級聯(lián)就是不行